Run the following code to reproduce the issue:
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import java.awt.Graphics2D;
import java.awt.Rectangle;
import java.awt.image.BufferedImage;

public class HitTest {

    public static void main(String[] args) {
        hitTest(1.0);
        hitTest(1.5);
    }

    static void hitTest(double scale) {
        BufferedImage img = new BufferedImage(1000, 1000, BufferedImage.TYPE_INT_RGB);

        Graphics2D g = img.createGraphics();
        g.scale(scale, scale);
        Rectangle clip = new Rectangle(7, 6, 200, 200);
        Rectangle rect = new Rectangle(6, 6, 1, 200);
        g.setClip(clip);
        boolean hitClipTest = g.hitClip(rect.x, rect.y, rect.width, rect.height);
        g.dispose();
        if (hitClipTest) {
            throw new RuntimeException(
                    String.format("Hit clip fails for scale: %f,"
                            + "clip: %s, rect: %s", scale, clip, rect));
        }
    }
}
-------------------

The result is:
Exception in thread "main" java.lang.RuntimeException: Hit clip fails for scale: 1.500000,clip: java.awt.Rectangle[x=7,y=6,width=200,height=200], rect: java.awt.Rectangle[x=6,y=6,width=1,height=200]
at java2d.HitTest.hitTest(HitTest.java:35)
at java2d.HitTest.main(HitTest.java:20)